Hello, My father had an old ‘74 evinrude 9.9 laying around in the garage for about 20 years and my son and I decided to get running again. We have spent the last 2 months on and off working on it and even repainted it. Looks brand new once again. We got it running really well on a stand so the other day we took it to our stock pond to test it out. At full throttle, it only seemed to run on one cylinder. But, if I adjusted the low speed adjustment valve to really lean, it would rev up and take off. But, as soon as I came down on the throttle it wouldn’t idle and would die. It would be hard to start back up unless I turned the low speed adjustment more rich. In the beginning, we did a compression test and check for spark, replace the ignition coils, and added a carb kit and all that. Does this seem like maybe a fuel delivery problem? I’m skeptical of the fuel line hose and the bulb that we have, it seems kind of cheap. My next thought was to possibly go to a little bit larger diameter, fuel line hose and replace the bulb with a better quality one. Just confused as to why I have to run it so lean in order to get it to run as it should at full throttle.
Any help with this would be greatly appreciated, my son is itching to take this thing out for an adventure!
Any help with this would be greatly appreciated, my son is itching to take this thing out for an adventure!
